Actions
All four quadriceps are powerful extensors of the knee joint. They are crucial in walking, running, jumping and squatting. Because rectus femoris attaches to the ilium, it is also a flexor of the hip. This action is also crucial to walking or running as it swings the leg forward into the ensuing step. The quadriceps, specifically the vastus medialis, plays the important role of stabilizing the patella and the knee joint during gait.
Read more about this topic: Quadriceps Femoris Muscle
Famous quotes containing the word actions:
“Long ago I added to the true old adage of “What is everybody’s business is nobody’s business,” another clause which, I think, more than any other principle has served to influence my actions in life. That is, What is nobody’s business is my business.”
—Clara Barton (1821–1912)
“The actions of each dancer were scrutinized with great care and any little mistake noted and remembered. The strain upon a dancer was consequently so great that when a fine dancer died soon after a feast it was said, “The peoples’ looks have killed him.””
—Merle Colby, U.S. public relief program (1935-1943)
“The legislative powers of government reach actions only, and not opinions, ... thus building a wall of separation between Church and State.”
—Thomas Jefferson (1743–1826)